# The dark matter crisis: problems with the current standard model of cosmology and steps towards an improved model

Speaker | Talk Date | Talk Series |
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Pavel Kroupa (Bonn) | 21 June 2013 | Institute of Astronomy Galaxies Discussion Group |

#### Abstract

The current cosmological model rests on Einstein's theory of general

relativity. In order for it to be consistent with large-scale structure

data, the existence of cosmologically relevant physical processes need

to be postulated: inflation, cold dark matter particles and dark energy.

Each of these is not well understood, but assuming the resulting

mathematical "LCDM" description is a representation of cosmological

reality, this representation can be tested in a different regime, namely

on the scales of the Local Volume of galaxies down to individual

galaxies. It is found that each test which has been designed shows the

LCDM description to fail such that the LCDM model needs to be discarded.

In particular, the Dual-Dwarf-Galaxy Theorem, which must be true in the

standard model, is falsified. The data suggest a different cosmological

model, but a definite final description is yet to be found.

#### Presentation

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